
COMPUTREND SYSTEMS, INC.

TR4

Processor          CX M1/AM K5/Pentium
Processor Speed    90/100/120/133/150/166/200/225/233MHz
Chip Set           Intel
Video Chip Set     None
Maximum Onboard    256MB (EDO supported)
Memory
Maximum Video      None
Memory
Cache              256/512KB
BIOS               Award
Dimensions         300mm x 186mm
I/O Options        32-bit PCI slots (4), floppy drive interface, green PC
                   connector, IDE interfaces (2), parallel port, PS/2
                   mouse port, serial ports (2), IR connector, USB
                   connectors (2), ATX power connector
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  ATX power                ATX         Power LED &           JFP pins 1 -
  connector                            keylock                    5

  Parallel port            CN1         Speaker               JFP pins 7 -
                                                                 10

  Serial port 1            CN2         Sleep switch          JFP pins 8 &
                                                                  9

  Serial port 2            CN3         Turbo LED            JFP pins 12 &
                                                                 13

  USB connector            CN4         Turbo switch         JFP pins 15 -
                                                                 17

  USB connector            CN5         Reset switch         JFP pins 19 &
                                                                 20

  PS/2 mouse port          CN6         IDE interface LED    JFP pins 21 &
                                                                 22

  Floppy drive             CN7         Green PC LED              JGL
  interface

  IDE interface 1          CN8         Green PC connector        JGS

  IDE interface 2          CN9         Power on/off             JRMS1
                                       switch

  IR connector              IR         Power on/off             JRMS2
                                       switch

  Chassis fan power        JFAN        32-bit PCI slots       PC1  PC4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JBAT          Pins 1 & 2
                                                              closed

      CMOS memory clear                       JBAT          Pins 2 & 3
                                                              closed

     Flash BIOS voltage select 5v            JP2           Pins 1 & 2
                                                              closed

      Flash BIOS voltage select 12v           JP2           Pins 2 & 3
                                                              closed

                         DIMM/DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     8MB        (2) 1M x 36       None           None          None

     8MB           None           None       (1) 1M x 64       None

     16MB       (2) 2M x 36       None           None          None

     16MB          None           None       (1) 2M x 64       None

     16MB       (2) 1M x 36   (2) 1M x 36        None          None

     16MB       (2) 1M x 36       None           None       (1) 1M x 64

     16MB          None           None       (1) 1M x 64    (1) 1M x 64

     24MB          None       (2) 2M x 36    (1) 1M x 64       None

     32MB       (2) 4M x 36       None           None          None

     32MB          None           None       (1) 4M x 64       None

     32MB          None       (2) 2M x 36    (1) 2M x 64       None

     40MB       (2) 4M x 36   (2) 1M x 36        None          None

     40MB       (2) 4M x 36       None           None       (1) 1M x 64

     48MB       (2) 2M x 36       None           None       (1) 4M x 64

     48MB       (2) 4M x 36   (2) 2M x 36        None          None

     64MB       (2) 8M x 36       None           None          None

     64MB       (2) 4M x 36   (2) 4M x 36        None          None

     64MB          None           None       (1) 4M x 64    (1) 4M x 64

     72MB       (2) 8M x 36   (2) 1M x 36        None          None

                      DIMM/DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     80MB           None       (2) 2M x 36    (1) 8M x 64        None

     80MB        (2) 8M x 36   (2) 2M x 36        None           None

     96MB        (2) 8M x 36   (2) 4M x 36        None           None

     128MB          None           None       (1) 8M x 64    (1) 8M x 64

     128MB       (2) 8M x 36   (2) 8M x 36        None           None

     128MB          None           None           None       (1) 16M x 64

     192MB       (2) 8M x 36   (2) 8M x 36    (1) 8M x 64        None

     256MB          None           None       (1) 16M x 64   (1) 16M x 64

     256MB       (2) 16M x 36  (2) 16M x 36       None           None

  Note: Board accepts EDO memory.

                DIMM VOLTAGE CONFIGURATION

           Voltage                       JV1

            3.3v              Pins 7 & 8, 9 & 10 closed

             5v                Pins 1 & 2, 3 & 4 closed

      CACHE CONFIGURATION

      Size          Bank 0

     256KB       (2) 32K x 32

     512KB       (2) 64K x 32

                      CPU SPEED SELECTION (CYRIX M1)

   CPU     Clock    Multiplier   SW/1   SW/2   SW/3    SW/4   SW/5   SW/6
  speed    speed

  133MHz   55MHz        2x        On    Off    Off     On     On     Off

  150MHz   60MHz        2x        On    Off    Off     On     Off    Off

  166MHz   66MHz        2x        On    Off    Off     Off    Off    Off

  200MHz   75MHz        2x        On    Off    Off     Off    On     Off

                      CPU SPEED SELECTION (CYRIX M2)

   CPU     Clock    Multiplier   SW/1   SW/2   SW/3    SW/4   SW/5   SW/6
  speed    speed

  166MHz   66MHz       2.5x       On     On    Off     Off    Off    Off

  180MHz   60MHz        3x       Off     On    Off     On     Off    Off

  200MHz   66MHz        3x       Off     On    Off     Off    Off    Off

  225MHz   75MHz        3x       Off     On    Off     Off    On     Off

                         CPU SPEED SELECTION (AMD)

   CPU     Clock    Multiplier   SW/1   SW/2   SW/3    SW/4   SW/5   SW/6
  speed    speed

  90MHz    60MHz       1.5x      Off    Off    Off     On     Off    Off

  100MHz   66MHz       1.5x      Off    Off    Off     Off    Off    Off

  120MHz   60MHz        2x        On    Off    Off     On     Off    Off

  133MHz   66MHz        2x        On    Off    Off     Off    Off    Off

  150MHz   60MHz       2.5x       On     On    Off     On     Off    Off

  166MHz   66MHz       2.5x       On     On    Off     Off    Off    Off

  200MHz   66MHz        3x       Off     On    Off     Off    Off    Off

  233MHz   66MHz       3.5x      Off    Off    Off     Off    Off    Off

                        CPU SPEED SELECTION (INTEL)

   CPU     Clock    Multiplier   SW/1   SW/2   SW/3    SW/4   SW/5   SW/6
  speed    speed

  90MHz    60MHz       1.5x      Off    Off    Off     On     Off    Off

  100MHz   66MHz       1.5x      Off    Off    Off     Off    Off    Off

  120MHz   60MHz        2x        On    Off    Off     On     Off    Off

  133MHz   66MHz        2x        On    Off    Off     Off    Off    Off

  150MHz   60MHz       2.5x       On     On    Off     On     Off    Off

  166MHz   66MHz       2.5x       On     On    Off     Off    Off    Off

  200MHz   66MHz        3x       Off     On    Off     Off    Off    Off

  233MHz   66MHz       3.5x      Off    Off    Off     Off    Off    Off

            CPU VOLTAGE SELECTION (SINGLE)

  Voltage     JV3        JV4        JV5        JV6

   3.38v      Open      Closed     Open       Open

   3.52v     Closed      Open      Open       Open

                  CPU VOLTAGE SELECTION (DUAL)

  Voltage    V core       JV3        JV4        JV5       JV6

   3.3v       2.8v      Closed      Open       Open       Open

   3.3v       2.9v       Open       Open       Open      Closed

   3.3v       3.2v       Open       Open      Closed      Open

